The rural road design tools build upon the extensive road design tools for automating the profile design based on minimum pavement depths and the ability to edit cross section elements using alignment, string and surface constraints. Typical of rural road design type projects, you can apply pavement superelevation and include rules-based ditches.
After setting a speed for the road length, you can select to apply Australian (or user defined for your region) superelvation rules to establish changes to pavement crossfall through each curve – Civil Site Design will calculate and apply the required superelevation through each curve based on the speed, curve radius and maximum superelevation.
The superelevation ‘table’ is a simple text file, so you can easily edit it to meet your regional requirements.
Shoulder codes can similarly be adjusted through curves, by applying a relative shoulder rotation – again you have control over how the shoulder rotates, relative to the pavement rotations. You can override the applied superelevation at each curve, either by directly editing chainages and crossfalls, or by re-applying a superelevation length and the maximum super to apply.
After applying superelevation you still have ultimate override control using the cross section Variation tools.
Civil Site Design includes an automated tool to add simple ditches that check for fill conditions on the ditch bottom and remove the ditch when not required. You can also apply independent vertical (profile) control and horizontal (alignment) control to ditches, and set for ditches to automatically be removed in certain fill or certain cut situations. With the conditional batter tools you can establish a rules based approach to the ditch and embankment designs to automatically include/remove ditches, add benching, change batter slopes and more, all based on depth range conditions you set.